private void setnetmask()
{
byte octet = 0;
byte value = 128;
byte[] netmask = new byte[4];
for (int i = 0; i <= 32; i++)
{
if (i % 8 == 0 && i > 0)
{
netmask[(i / 8) - 1] = octet;
octet = 0;
value = 128;
}
if (i < cidr)
{
octet += value;
}
value /= 2;
}
this.netmask = new InternetProtocolAddress(netmask[0], netmask[1], netmask[2], netmask[3]);
rnetmask = new InternetProtocolAddress(this.netmask.IPAddress ^ UInt32.MaxValue);
setWildcard(netmask);
}
public IPCalculation(InternetProtocolAddress ip, byte cidr)
{
this.ip = ip;
this.cidr = cidr;
setnetmask();
setHostnumber();
}
private void setWildcard(byte[] wildcard)
{
for (int i = 0; i < wildcard.Length; i++)
{
wildcard[i] = (byte)(255 - wildcard[i]);
}
this.wildcard = new InternetProtocolAddress(wildcard[0], wildcard[1], wildcard[2], wildcard[3]);
}
public InternetProtocolAddress getBroadcastAddress()
{
if (firstAddress == null)
{
getfirstAddress();
}
if (networkaddress == null)
{
getNetworkAddress();
}
broadcastAddress = new InternetProtocolAddress((networkaddress.IPAddress ^ rnetmask.IPAddress));
return(broadcastAddress);
}
public InternetProtocolAddress getLastAddress()
{
if (firstAddress == null)
{
getfirstAddress();
}
if (networkaddress == null)
{
getNetworkAddress();
}
lastAddress = new InternetProtocolAddress((networkaddress.IPAddress ^ rnetmask.IPAddress) - 1);
return(lastAddress);
}
public InternetProtocolAddress getNetworkAddress()
{
networkaddress = new InternetProtocolAddress(ip.IPAddress & netmask.IPAddress);
return(networkaddress);
}
public InternetProtocolAddress getfirstAddress()
{
firstAddress = new InternetProtocolAddress((ip.IPAddress & netmask.IPAddress) + 1);
networkaddress = new InternetProtocolAddress(ip.IPAddress & netmask.IPAddress);
return(firstAddress);
}